# D3DXVECTOR3 结构 (D3dx9math.h)

D3DX 实用工具库已弃用。 建议改用 DirectXMath

## 语法

``````typedef struct D3DXVECTOR3 {
FLOAT x;
FLOAT y;
FLOAT z;
} D3DXVECTOR3, *LPD3DXVECTOR3;
``````

x

x 组件。

y

y 组件。

z

z 组件。

## 注解

### D3DXVECTOR3 扩展

D3DXVECTOR3 具有以下 C++ 扩展。

``````#ifdef __cplusplus
typedef struct D3DXVECTOR3 : public D3DVECTOR
{
public:
D3DXVECTOR3() {};
D3DXVECTOR3( CONST FLOAT * );
D3DXVECTOR3( CONST D3DVECTOR& );
D3DXVECTOR3( CONST D3DXFLOAT16 * );
D3DXVECTOR3( FLOAT x, FLOAT y, FLOAT z );

// casting
operator FLOAT* ();
operator CONST FLOAT* () const;

// assignment operators
D3DXVECTOR3& operator += ( CONST D3DXVECTOR3& );
D3DXVECTOR3& operator -= ( CONST D3DXVECTOR3& );
D3DXVECTOR3& operator *= ( FLOAT );
D3DXVECTOR3& operator /= ( FLOAT );

// unary operators
D3DXVECTOR3 operator + () const;
D3DXVECTOR3 operator - () const;

// binary operators
D3DXVECTOR3 operator + ( CONST D3DXVECTOR3& ) const;
D3DXVECTOR3 operator - ( CONST D3DXVECTOR3& ) const;
D3DXVECTOR3 operator * ( FLOAT ) const;
D3DXVECTOR3 operator / ( FLOAT ) const;

friend D3DXVECTOR3 operator * ( FLOAT, CONST struct D3DXVECTOR3& );

BOOL operator == ( CONST D3DXVECTOR3& ) const;
BOOL operator != ( CONST D3DXVECTOR3& ) const;

} D3DXVECTOR3, *LPD3DXVECTOR3;

#else //!__cplusplus
typedef struct _D3DVECTOR D3DXVECTOR3, *LPD3DXVECTOR3;
#endif //!__cplusplus

typedef struct D3DXVECTOR3_16F
{
#ifdef __cplusplus
public:
D3DXVECTOR3_16F() {};
D3DXVECTOR3_16F( CONST FLOAT * );
D3DXVECTOR3_16F( CONST D3DVECTOR& );
D3DXVECTOR3_16F( CONST D3DXFLOAT16 * );
D3DXVECTOR3_16F( CONST D3DXFLOAT16 &x, CONST D3DXFLOAT16 &y, CONST D3DXFLOAT16 &z );

// casting
operator D3DXFLOAT16* ();
operator CONST D3DXFLOAT16* () const;

// binary operators
BOOL operator == ( CONST D3DXVECTOR3_16F& ) const;
BOOL operator != ( CONST D3DXVECTOR3_16F& ) const;

public:
#endif //__cplusplus
D3DXFLOAT16 x, y, z;

} D3DXVECTOR3_16F, *LPD3DXVECTOR3_16F;

``````

D3dx9math.h

D3DX 结构